Discover French Guiana
Very few tourists make it to this small South American country. It's a shame, because nature in French Guiana is still pure and unspoiled.
Kourou Weather in December
December in Kourou brings high temperatures, with highs of 29°C (84°F) and nights dropping to 24°C (75°F). The rainy season is in full swing this month, so frequent downpours are part of the picture.
Rainfall in Kourou in December
Kourou is in the rainy season in December, with rain on around 18 days and an average of 262 mm (10 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Kourou in December
December in Kourou brings typical temperatures with highs around 29°C (84°F) and lows of 24°C (75°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Kourou in December
The area enjoys a moderate level of sunlight, with around 140 hours. It's a good balance between sunny and rainy days.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Kourou. Our weather planner can help you explore destinations with more pleasant weather conditions.
Kourou Temperature in December
Min Temperature
24°C (75°F)
Max Temperature
29°C (84°F)
Chance of Rain
60%
Precipitation
262 mm (10 in)
Rainy days
18 days
Sunshine
140 hours *
Percentage Sunshine
*
* Data from: Cayenne, French Guiana (42 KM, 26 Miles).
Kourou Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Kourou - and find the best time to visit.
Daily Historical Temperatures
46-year average (1976-2025)
Based on our historical records, temperatures in Kourou typically stay consistent throughout December, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in December
Daily Historical Precipitation
46-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather records for Kourou in December
Browse day-by-day weather records for Kourou spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kourou historical weather extremes in December
Based on weather observations in Kourou between 2002 and 2025, these are the recorded extremes during December.
- Kourou recorded its highest December temperature of 34°C (93°F) on December 3, 2004.
- The lowest daytime temperature in December was 25°C (77°F), recorded on December 22, 2009.
- Kourou registered its coldest December night on December 30, 2018, with temperatures dropping to 21°C (70°F).
- The wettest December day on record brought 133 mm (5.2 in) of precipitation to Kourou (December 12, 2014).
Best Places in French Guiana in December
Find out more about the weather in French Guiana and which places have the best travel conditions in this month. See all of French Guiana in December →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Kourou in December
Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Kourou in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Kourou 3-Day Forecast
More climate data for Kourou
See the full Kourou climate overview or explore weather in French Guiana.
Popular in December
Where to go in December - average daytime high across popular destinations.
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